package core

import (
	"bytes"
	"time"

	"git.wntrmute.dev/kyle/goutils/log"
	pb "git.wntrmute.dev/kyle/overpush/proto"
	"github.com/gregdel/pushover"
)

var priorityMap = map[pb.Priority]int{
	pb.Priority_PriorityInvalid:   pushover.PriorityNormal,
	pb.Priority_PriorityLowest:    pushover.PriorityLowest,
	pb.Priority_PriorityLow:       pushover.PriorityLow,
	pb.Priority_PriorityNormal:    pushover.PriorityNormal,
	pb.Priority_PriorityHigh:      pushover.PriorityHigh,
	pb.Priority_PriorityEmergency: pushover.PriorityEmergency,
}

type Message struct {
	m   *pushover.Message
	r   []string
	buf *bytes.Buffer
}

func (m *Message) Close() error {
	if m.buf != nil {
		m.buf.Reset()
	}
	return nil
}

func NewMessage(pbmsg *pb.Message) *Message {
	msg := &Message{
		m: &pushover.Message{
			Message: pbmsg.Text,
		},
	}

	if t := pbmsg.GetTimestamp(); t != 0 {
		msg.m.Timestamp = t
	} else {
		msg.m.Timestamp = time.Now().Unix()
	}

	priority, ok := priorityMap[pbmsg.Priority]
	if !ok {
		log.Warningln("core: message has an unknown priority; marking it as normal priority")
		priority = pushover.PriorityNormal
	}
	msg.m.Priority = priority

	if url := pbmsg.GetUrl(); url != nil {
		msg.m.URL = url.GetLink()
		msg.m.URLTitle = url.GetTitle()
	}

	if attachment := pbmsg.GetAttachment(); attachment != nil {
		msg.buf = bytes.NewBuffer(attachment)
		if err := msg.m.AddAttachment(msg.buf); err != nil {
			log.Warningf("core: adding attachment to message failed: %s", err)
			if pbmsg.Priority == pb.Priority_PriorityLowest {
				return nil
			}
			log.Warningln("core: continuing without attachment")
		}
	}

	msg.r = pbmsg.GetRecipients()
	return msg
}